Filter device



June 29 1926,

H. J. KUHN ET AL FILTER DEVICE Filed August 21, 1924 l 1 `IIIIIIIIIII-Illlllllll11H n. Y w y Patented June 29, 1926.

UNITED STATES HARRY J. KUHN, OF MIDDLETOWN, AND ESTON C. HARRIS, OF MONTICELLO, NEWTv r y v1,590,950 PATENT OFFICE.

YORK. y

FILTER DEVICE. I

Application fiieaiaugust 21, 19,24. serial No. 733,388.

This invention relates to filter devices particularly adapted for use in connection with internal combustion engines, to filter the fuel. therefor before the sameY is fed through the carburetor Ato the engine.

The primary object of this invention is the provision, in a 'manner as hereinafter set forth,y of a fuel filter adapted toy be connected in the fuel line, which will act to remove from the fuel .dirt and water and other foreignY matter, before the same is fed tothe engine thereby producing better and morecomplete combustion of the fuel in the engine by'which Vgreater -power will be obtained.

A still'further object Vof this invention is the provision, in a manner as hereinafter setforth, of a fuel straining device so constructed that the flow of fuel tothe engine will be underV observation at all times' by the one controlling the engine thereby in: dicating to the operator any irregularity in the flow of fuelwvhich would injure the work and power of the engine.

Still another object of this invention fis the provision, in a manner as hereinafter set forth, of a sight fuel strainer having means for maintaining a quantity of fuel at a certain height withinv the strainer body so that water'and sediment and other foreign matter will settle tothe bottomV ofthe strainer where it is drawn off while the clean and strained fuel only will beV allowed to pass from the Vstrainer to the engine.

Yet another object of this invention is the provision in a manner as hereinafter set forth, of a sight fuel strainer of an improvedv construction setting ,up means whereby the strainer may be secured in position within sight of the operator of the machine, in a new, more efficient and better way. Y

A finalv object of this invention is the provision, in a manner ashereinafter set forth, of a sight feed fuel strainer of improved design, of neat appearance, having few movable parts, strong, durable, efficient in action, inexpensive to manufacture Y' andv easily set up.

.The invention will be best understood from a consideration of the following detailed description taken in connection with the accompanying'drawings forming va part of this specification, with the understanding i H V,screw l5, by means of which-the parts are that the invention is not confined to any strict conformity withl the showing lof the drawings but may be changed and modified so long as such changes and modifications mark no material departure from the salient vfeatures of the invention as expressed in the appended claims. In the drawings: y Y Figure 1 shows a side elevation ofthe device embodying this invention. l Figure 2 is a top plan'view ofthe same.w

Figure 3 is a central, longitudinal sec,-

tional view of thedevice.'

Figure 4 is a transverse l section taken upon' the line 4.-4 of Figure l.`

Figure 5 is a'vertical section throughia'n element within the li'lter device, showing details of construction. i,

Referringnow to the drawings in detail whereinlilre numerals of reference'indi'cate corresponding parts throughout the several views, the device yembodying this invention comprises top `and bottom plates, each indicated asa whole by the'numerals 'l and 2 respectively, and the intermediate connecting cylindrical transparent body -portion 3,

' ywhich ishere lshown 4and'is preferably'constructed of heavy glass. n Each of the plates l and 2 is formed to provideV the peripheral flange which, as shown, is of slightly greaterv diameter than the cylinder 3 and in `which the cylinderends Y are positioned. Between the ycylinder 'ends l and the inner face' of each of theplates Vis placed a ring washer 5. Y I

Eachof the plates l` and 2 has `formed therethrough ay concentric aperture Gthroughwhich there extends the ends of thetie rod,

7 Each endof this tie rod T is threaded to receive thereon the nut 8, which nuts are cone-'shaped upon one side and iit'into the countersunlt portion 9 of the plate.v

Each of the plates l and 2' has Vformed thereon a boss 10 which extends beyond theV edge of the plate and is bifurcated as shown to Vprovide the spacedears ll throughfeach of which. an aperture 12`Jis formed.. i

A supporting screw .13 is associated with each of the 'plates l and 2, and each; of these screws has at its inner end the lenlarged cylindricalhead 14 which is positioned ben tween the vfur-cations ll, andfeach of these heads has an axial bore'therethrough which is aligned with theY apertures 12in the furcations to receivefthe securing4 and pivot secured' together; ilhen the device is set up andthe plates are super-posed and retained at each end of theY cylinder 3- by means of the tierodffl' as indicated in Figure 8, the furcations ll of the bosses l() are ijir` alignment so that the extending screws 13 may be extended through apertures in a supporting member to receive retaining nuts (not shown) designedl to hold the screws and the device in position. I y

At point intermediate the center and lower endof the tie rod 7, there is secured to the tie rod a segmental plate 16,l this plate asl shown in Figure Ll' extends/j from the tie rod 'T to a point adjacent the inner face of the cylinder 3. Y' H Y Directlyabove this plate 1G', which serves as a deflector or baffle plate in a manner to be hereinafter described, 'the plate 1 has formed therethrough. the 'threaded aperture Y '17.' into this aperture 1"?` there is threaded one arm of an elboi'v'coup'l'ing 18, the other arm ofy which has connected thereto, by Ymeans of the ccup'ling nut119, a .fuel supply tube leadingfrom the fuel tank of the engine Vto the strainer.Y

Formed upon the inner face of the'plate i' '1 ata point diametri'cally opposite the point at which' the" aperture 17 is formed, Vis a centering lug4 orfnipple 2L In the plate 2 Y there is formed a pair of threadedapertur'es 22'. and 23' respectively, the aperture 22' being adapted to receivethe threaded endof the drain cock er by means of which Athe body of the device may be drained and cleaned.v

This aperture and the drain cool; therein is positioned directly beneath the defleetor or baflief plate 16". Theother aperture v23 is located directly beneath the; nipple 21, and is adapted to threadably receive therethrough the lower portion oftherfuel outlet element ofthe device. This fuel outlet element comprises an elbow 25 having one arm provided with the coupling nut 26' kto which the fuel feed line to the carburetor ofthe engine is connectedas at 27. The other arm ofthe "connecting elbow is of substantial length and Yis provided at its central portion with the threads 2S which engage inthe threaded an. overflbw.

Secured to the end of the-portion.y 29 andV surrounding the reduced overflowpipe 30 and. extending to and surrounding the nippl'e 21 is a vcopper gauze cylinder' 3T which acts asa strainer Qlthe' fuel which enters the cylinder Sand leaves by' way of the overiowpip'e 30 and the' coupling"elbe`w'25.

This copper' gauze lcylinder 31 is ofthe saine diameter as the portion 29, andls only frietionally engaged at its upper end over the nipple 21 so that should the same need cleaning or repairing, it can be entirely removed together with the overflow pipe 30, by un# screwing the coupling elbow 25 whereby the ,L- i

portion 29 and the copper cylinder 3l will pass easily through the aperture Q3. ln this i manner this 'portion of the structure can be removed and cleaned-V without taking down vany. other part of thestrainer and without any trouble other than the disconnecting of the fuel line 27 froml the coupling' r25.

then the'strainer-embodying this invention is set upi'n the gasoline line of a machine between the fuel tank and the -carburetor. thefuel will enter .throughthefcoupling'lS and fall upon the baillev plate 16 and fill the cylinder to the' top of the overflow pipe" 30, through. which overflow vpipe the carburetor will draw the fuel to pass into the 'engine; l When the device. is cleaned and perfectly operating, the'fuelwill always be upon a level with thev top of the overflow pipe and' all dirt, Av'vater or other foreign matter entering the strainer` is settled to' the bottom thereof Vabout the portion 2u. The baille; plate 16 prevents the eeY disturbance of any sediment in the bottoni sediment 'frein the strainer wheny the same has' reached' a height in the 'strainer which would necessitate its removal. .This sediment and' water should be removed before the same rises above they upper `end of the portion 29 to whichv the gauze cylinder 31 is connected;

From the foregoing description it may be seen that a veryv eliicient and' useful fuel strainer isY provided by means of which an engine operator can view at all-.times the flow of fuel to his engine, and'by means of which he will; be 'informed immediately of l any disturbance or interruption in the How of fuel through the line. In addition to this, anA engine operator, in using this device, isassured at all times that a perfectly clean and Sediment free' fuel`r Vis beingV fedk to' khis machine and that heV is getting the maximum' power' from his fue Having thusv describedj our invention what we claim is: A

1,111- a fuel' strainer of thecharacter set' forth, a'. top and: bottom plateV member', va arranged between and spacing said piate members, aeennectng'te-.rcd between' said" plat'es`,; an'A outlettu'be of uniform diafineter" threaded intermediate' its ends and lli) secured in said lower plate, an overflow pipel of less diameter than said tube fixed at one end to the inner end of said outlet tube, and a foraminous tubular strainer of the diameter of said outlet tube, surrounding said overflow pipe and fixed at one end to said tube and having its other end open and removably secured against the under side of said top plate.

2. In a fuel strainer of the character set forth, a top and bottom plate member, an inlet through said top plate, a easing arrfnged between and spacing said members,

strainer element within said casing'and earried by said connection and removable therewith, and a baffle plate carried by said tie 20 rody beneath said inlet.

f In testimonywhereof, we affix our signatures hereto. a

HARRY' J. KUHN. Es'roN o. HARRIS. 

